| inconformable(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| incongruous(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| inconsistent(adjective, antagonistic, unsuitable, discordant, contradictory) |
| inconsonant(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| inconstant(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| ineffective |
| inefficient(adjective, inadequate, useless, inept, unable) |
| ineligible(adjective, inadequate, useless, inept, unable) |
| inexperienced(adjective, inadequate, useless, inept, unable) |
| inexpert(adjective, inadequate, useless, inept, unable) |
| infelicitous |
| insufficient(adjective, inadequate, useless, inept, unable) |
| irreconcilable(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| irrelevant |
| jarring(adjective, inappropriate, antagonistic, unsuitable, conflicting) |
| mal a propos(expression, idiom) |
| maladroit(adjective, inadequate, useless, inept, unable) |
| malapropos |
| marching to a different drummer(expression, adjective, idiom, inappropriate, antagonistic) |
| misjoined |